AllocateGrok 4.3 vs Kimi K2.5
Grok 4.3 is not currently in the Allocate serving catalog, so this page lists no prices for it: every price on this site comes from the live catalog.
Grok 4.3
Kimi K2.5LabxAITogethercomputer
AccessNot served on AllocateOpen weights
Context windown/a256K tokens
List price, inputNot served$0.5 / M tokens
List price, outputNot served$2.8 / M tokens
Cached inputn/an/a
LicenseProprietary APINot listed
Fine-tunableNoYes
Specifications and provider list prices from the Allocate catalog, checked 2026-07-21.
Choose Grok 4.3 for
- Freshness-sensitive answers
- Fast reasoning turns
- Research assistants
Choose Kimi K2.5 for
- Whole-document reasoning
- Long-context retrieval
- Open-weight fine-tuning
Common questions
Which has the bigger context window?
Kimi K2.5: 262,144 tokens (256K) against an unlisted window for Grok 4.3.
Can I fine-tune Grok 4.3 or Kimi K2.5?
Kimi K2.5 publishes open weights (Not listed) and can be fine-tuned on your own data. Grok 4.3 is a closed model served over API; its weights are not available.
Related comparisons
Run the numbers on your workload
Or don’t choose. On Allocate a route name is the contract: point yours at one model today, swap to the other tomorrow, and compare them on your live traffic with per-token metering.